{"id":"53d8d3e1-ca33-4012-adf3-e05a4d652e34","title":"Process Memory Dump Via Dotnet-Dump","description":"Detects the execution of \"dotnet-dump\" with the \"collect\" flag. The execution could indicate potential process dumping of critical processes such as LSASS.\n","author":"Nasreddine Bencherchali (Nextron Systems)","status":"test","level":"medium","date":"2023-03-14","modified":"","tags":["attack.stealth","attack.t1218"],"technique_ids":["T1218"],"logsource":{"category":"process_creation","product":"windows"},"falsepositives":["Process dumping is the expected behavior of the tool. So false positives are expected in legitimate usage. The PID/Process Name of the process being dumped needs to be investigated"],"references":["https://learn.microsoft.com/en-us/dotnet/core/diagnostics/dotnet-dump#dotnet-dump-collect","https://twitter.com/bohops/status/1635288066909966338"],"source_path":"rules/windows/process_creation/proc_creation_win_dotnetdump_memory_dump.yml","source_sha256":"0b618261b817b2b6ddc7757bef97752fefe6d9933a369e8cf63727cbfc5c8a7b","source_url":"https://github.com/anpa1200/sigma/blob/b249e9683190cffdcaf188ccbfb90bf4759844e1/rules/windows/process_creation/proc_creation_win_dotnetdump_memory_dump.yml","license":"Detection Rule License 1.1","license_url":"https://github.com/SigmaHQ/Detection-Rule-License/blob/main/LICENSE.Detection.Rules.md","yaml":"title: Process Memory Dump Via Dotnet-Dump\nid: 53d8d3e1-ca33-4012-adf3-e05a4d652e34\nstatus: test\ndescription: |\n    Detects the execution of \"dotnet-dump\" with the \"collect\" flag. The execution could indicate potential process dumping of critical processes such as LSASS.\nreferences:\n    - https://learn.microsoft.com/en-us/dotnet/core/diagnostics/dotnet-dump#dotnet-dump-collect\n    - https://twitter.com/bohops/status/1635288066909966338\nauthor: Nasreddine Bencherchali (Nextron Systems)\ndate: 2023-03-14\ntags:\n    - attack.stealth\n    - attack.t1218\nlogsource:\n    category: process_creation\n    product: windows\ndetection:\n    selection_img:\n        - Image|endswith: '\\dotnet-dump.exe'\n        - OriginalFileName: 'dotnet-dump.dll'\n    selection_cli:\n        CommandLine|contains: 'collect'\n    condition: all of selection_*\nfalsepositives:\n    - Process dumping is the expected behavior of the tool. So false positives are expected in legitimate usage. The PID/Process Name of the process being dumped needs to be investigated\nlevel: medium\n","validation":"yaml_parsed_not_backend_compiled_or_live_validated","techniques":[{"key":"enterprise/T1218","id":"T1218","name":"System Binary Proxy Execution","page":"techniques/enterprise/T1218/"}],"data_path":"data/detection-rules/53d8d3e1-ca33-4012-adf3-e05a4d652e34.json","kind":"sigma"}